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单片机简单实验仿真_二极管顺序点亮

        ORG    0000H
        LJMP   START
        ORG    0030H
START:  MOV A,#0FEH
        MOV R5,#8
OUTPUT: MOV P0,A
        RL  A
        CALL  DELAY
        DJNZ  R5,OUTPUT
        LJMP START
DELAY:  MOV R6,#0 
        MOV R7,#0
DELAYLOOP:DJNZ R6,DELAYLOOP
          DJNZ R7,DELAYLOOP
	  RET
END